Cloud Computing Week 5 NPTEL Assignment Answers 2025

NPTEL Cloud Computing Week 5 Assignment Answers 2024

Q1. ____ is a formal contract between a Service Provider (SP) and a Service Consumer (SC).

• A. SLO
• B. SLA
• C. KPI
• D. Utility Premium

✅ Answer :- b
✏️ Explanation: A Service Level Agreement (SLA) is a formal contract that outlines expectations, responsibilities, and guarantees between a Service Provider and a Service Consumer.

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Q2. Statement 1: SLA contains SLO.

Statement 2: Multiple KPIs are aggregated to SLA.**

• A. Statement 1 is TRUE and Statement 2 is FALSE
• B. Statement 2 is TRUE and Statement 1 is FALSE
• C. Both statements are TRUE
• D. Both statements are FALSE

✅ Answer :- a
✏️ Explanation:

• Statement 1 is TRUE: SLA includes Service Level Objectives (SLOs).
• Statement 2 is FALSE: KPIs support SLOs, but aren’t directly aggregated to SLA.

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Q3. If demand is flat, the penalty will be linear.

• A. TRUE
• B. FALSE

✅ Answer :- b
✏️ Explanation: Flat demand doesn’t necessarily lead to a linear penalty; penalties often depend on SLA terms, not demand patterns.

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Q4. What is/are the correct statement(s) regarding VM load management?

• A. When load increases, new VMs should be scheduled to new nodes.
• B. When load decreases, use WOL to start up waiting nodes.
• C. When load increases, use WOL to start up waiting nodes.
• D. When load decreases, live migrate VMs to more utilized nodes.

✅ Answer :- a, c, d
✏️ Explanation:

• (a) New VMs on new nodes help scale.
• (c) Wake-on-LAN (WOL) is used to power up standby nodes under load.
• (d) Migration helps consolidate VMs and power down unused nodes.
• (b) is incorrect; WOL is for scaling up, not down.

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Q6. A third-party application runs in the cloud for 12 hours/day. At the end of one month [30 days], it was found that the cloud service suffered 5 outages of durations: 1 hr 30 min, 30 min, 2 hr 15 min, 1 hr 45 min, and T hours. SLA guarantees 97% uptime. What are the possible value(s) of T that SLA negotiation gets honored?

• A. 3 hours
• B. 6 hours
• C. 12 hours
• D. 8 hours

✅ Answer :- a
✏️ Explanation:
Total uptime = 12 hrs/day × 30 = 360 hrs
97% of 360 = 349.2 hrs → allowed downtime = 10.8 hrs
Sum of known outages = 6 hrs
T must be ≤ 4.8 hrs → 3 hrs is acceptable, others violate SLA.

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Q7. Which of the following is/are objectives of Resource Management?

• A. Increased latency
• B. Scalability
• C. Improved throughput
• D. Improved security

✅ Answer :- b, c
✏️ Explanation: Resource management aims to scale efficiently and improve throughput. Increased latency is negative, and while security is important, it is not a primary goal of resource allocation.

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Q8. Which of the following is/are resource allocation approaches in resource management?

• A. Energy-aware resource allocation
• B. Reinforcement learning guided control policy
• C. Network queuing model
• D. Intelligent multi-agent model

✅ Answer :- a, d
✏️ Explanation:

• Energy-aware methods optimize for power efficiency.
• Multi-agent systems help in decentralized decision making.
• (b) and (c) are techniques/models, not primary allocation strategies.

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Q9. Statement 1: Each reducer groups map results using different keys and applies a function f on the list of values for these keys.

Statement 2: Files are sorted by a key and stored to the local file system.**

• A. Statement 1 is TRUE and Statement 2 is FALSE
• B. Statement 2 is TRUE and Statement 1 is FALSE
• C. Both statements are TRUE
• D. Both statements are FALSE

✅ Answer :- b
✏️ Explanation:

• Statement 1 is FALSE: All reducers group by the same keys.
• Statement 2 is TRUE: Output is often sorted and stored locally.

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Q10. In computing, there is a nonlinear relationship between the number of processing cores used and power consumption

• A. TRUE
• B. FALSE

✅ Answer :- a
✏️ Explanation: Power usage doesn’t scale linearly with core count due to overhead, heat, and power efficiency curves.